216255255 has 16 divisors (see below), whose sum is σ = 350179200. Its totient is φ = 113945888.

The previous prime is 216255251. The next prime is 216255257. The reversal of 216255255 is 552552612.

It is a cyclic number.

It is not a de Polignac number, because 216255255 - 2² = 216255251 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216255251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85605 + ... + 88094.

It is an arithmetic number, because the mean of its divisors is an integer number (21886200).

Almost surely, 2^216255255 is an apocalyptic number.

216255255 is a deficient number, since it is larger than the sum of its proper divisors (133923945).

216255255 is a wasteful number, since it uses less digits than its factorization.

216255255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173790.

The product of its digits is 30000, while the sum is 33.

The square root of 216255255 is about 14705.6198441276. The cubic root of 216255255 is about 600.2362541833.

The spelling of 216255255 in words is "two hundred sixteen million, two hundred fifty-five thousand, two hundred fifty-five".